[특허]Wheelchair automatic anti-rollback assembly

[미국특허] Wheelchair automatic anti-rollback assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62M-001/14
출원번호	US-0026902 (1998-02-20)
발명자 / 주소	Ritchie James K. Marquis James A.
출원인 / 주소	210 Innovations LLC
대리인 / 주소	Pillsbury Madison & Sutro Intellectual Property Group
인용정보	피인용 횟수 : 12 인용 특허 : 13

초록 ▼

An anti-rollback assembly adapted or adaptable for use in combination with a wheelchair. The anti-rollback assembly includes a one-way brake assembly automatically immobilizing the wheelchair against rearward movement when the occupant attempts to rise from or sit in a seat member of the wheelchair, yet at the same time does not prevent the wheelchair from moving in a forward direction. Conversely, when the occupant is fully seated in the seat member, the one-way brake assembly is disengaged so that the wheelchair can move freely in forward or rearward directions. The assembly can be retrofitted onto existing wheelchairs, and is adjustable to fit various size wheelchairs.

대표청구항 ▼

[ What is claimed is:] [1.] A wheelchair comprising:a frame structure;a rear drive wheel assembly and a front wheel assembly supporting said frame structure, said rear drive wheel assembly comprising first and second drive wheels that have respective rotational axes and are each rotatable relative to said frame structure along a forward rotational direction which causes said wheelchair to move forward and a rearward rotational direction which causes said wheelchair to move rearward;a seat member supported by said frame structure and constructed and oriented to accommodate an occupant;a one-way brake assembly comprising a brake member having at least one end portion movable from an activated state in which said end portion engages at least one of said drive wheels at a point of contact to a non-activated state in which said end portion is spaced from the point of contact of said at least one of said drive wheels so as not to interfere with rotation of said at least one of said drive wheels in the forward and rearward rotational directions;a biasing member operatively associated with said one-way brake assembly to exert a biasing force on said brake member along a non-radial direction relative to said at least one of said drive wheels, the biasing force urging said end portion into engagement with the point of contact with sufficient force to maintain engagement between said end portion and the point of contact and prevent rearward rotation of said at least one of said drive wheels when said end portion is in the activated state, yet the biasing force exerted by said biasing member on said brake member being insufficient to cause said end portion to prevent forward rotation of said at least one of said drive wheels when in the activated state; andan automatic brake releasing assembly operatively associated with said one-way brake assembly and said seat member to automatically move said end portion away from the point of contact and out of the activated state to the non-activated state in response to occupation of said seat member.

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

Howland Frank S. (1187 Hillside Ave. 1 B9 Niskayuna NY 12309), Anti-tip wheelchair accessory.
상세보기
Dugas Grady A. (P.O. Box 37 ; Taylor St. Marion LA 71260), Automatic braking wheelchair.
상세보기
Babilas John (170 Newell St. Brooklyn NY 11222), Automatic wheel chair brake.
상세보기
DiGeorge Michael A. (P.O. Box 563 Sulphur LA 70664-0563), Incline climbing brake for wheelchairs.
상세보기
Korpi Emil (29 Southpine Ct. San Jose CA 95138), Leveraged hand propeller for a wheel chair with brake.
상세보기
DeWoody, Robert O.; Hollerich, Ralph M., Multifunction wheelchair handbrake especially adapted for ramp climbing.
상세보기
Morford Marvin A. (1815 Ashworth Rd. West Des Moines IA 50265), Tiltable supporting wheelchair.
상세보기
Roth Gail (Miami CAX) Guenther Henry (Manitoba CAX), Wheel chair electric brake and pedal safety kit.
상세보기
Knoche Raymond E. (Creve Coeur MO), Wheelchair brake assembly.
상세보기
Dombrowski Gregory J. (805 NE. Green Oaks Blvd. ; #370 Arlington TX 76006-2217) Song Jay H. (901 Dawson St. Cedar Hill TX 75102), Wheelchair having freewheel handle and brake assembly.
상세보기
Strauss Herbert (688 W. Lynwood St. Thousand Oaks CA 91360), Wheelchair parking brake.
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Peek Gregory A. (8955 Ridgeline Blvd. Highlands Ranch CO 80126), Wheelchair with anti-tip assembly.
상세보기
Fought Gerald E. (Avon OH) Herrmann Raymond J. (Westlake OH), Wheelchair with combined wheel lock and hill holder.
상세보기

이 특허를 인용한 특허 (12) 인용/피인용 타임라인 분석

Moody, Thomas O., Anti-rollback brake.
상세보기
Stamps,Douglas Wayne; Stamps,Janice Lynn; Giesting,Samuel Charles; Cooper, III,Edward Thomas; Schenk,Daniel Edward; Stoll,Jarod Daniel; Nisley,Adam Jay, Assistive mobility device.
상세보기
Connors,James B.; Iles,Edward; Famulare,Frank; Li,Yuan Jian; Zhang,Morgan, Automatic wheelchair brake system and wheelchair including same.
상세보기
Jones, Bryan Bradley, Powered wheel chair with automatic emergency stopping.
상세보기
Ryan, Stephen; Hardy, Susan; Johnson, William; Doell, Michael, Stable wheeled walker device.
상세보기
Hector, Jr., Melvin G.; Yentzer, Dana R., Structure, components and method for constructing and operating an automatically self locking manually propelled vehicle such as a wheel chair.
상세보기
Steven R. Hall ; Janet C. Hall, Wheel chair rollback stop.
상세보기
Yentzer, Dana R.; Hector, Jr., Melvin G.; LaVeer, Mark F, Wheel chair with automatic breaking.
상세보기
Marquis, James A.; Ritchie, James K., Wheelchair and alarm therefor.
상세보기
Connors, James B.; Iles, Edward; Famulare, Frank, Wheelchair brake apparatus and wheelchair including same.
상세보기
Usherovich, Boris, Wheelchair brake system with anti-rollback and anti-tip capabilities.
상세보기
Wakita,Toyoaki; Nozawa,Takao; Takagi,Kiyoshi, Wheelchair, brake unit therefor, and brake unit for a manually-propelled vehicle.
상세보기

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Wheelchair automatic anti-rollback assembly 원문보기